Boutell, Wayne S.
University of California Press , 1966
Buku Teks
Stolle, Carlton, author
McGraw-Hill, 1971
Buku Teks
Tower, Ralph B., author
Prentice-Hall, 1991
Buku Teks
Taylor, Donald H., author
John Wiley & Sons, 1982
Buku Teks
Taylor, Donald H., author
John Wiley & Sons, 1994
Buku Teks